Discovery of X-Ray Emission from the Crab Pulsar at Pulse Minimum
| Autor: | Jeffery J. Kolodziejczak, Stephen L. O'Dell, Frits Paerels, Ronald F. Elsner, Allyn F. Tennant, Werner Becker, Stephen S. Murray, Martin C. Weisskopf, Douglas A. Swartz, Michael Juda, Noriaki Shibazaki |
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| Rok vydání: | 2001 |
| Předmět: |
Physics
X-ray astronomy Crab Pulsar Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Astronomy and Astrophysics Astrophysics Pulse (physics) Neutron star Crab Nebula Pulsar Space and Planetary Science Observatory Emission spectrum |
| Zdroj: | The Astrophysical Journal. 554:L173-L176 |
| ISSN: | 0004-637X |
| DOI: | 10.1086/321718 |
| Popis: | The Chandra X-ray Observatory observed the Crab Nebula and Pulsar using the Low-Energy Transmission Grating (LETG) with the High-Resolution Camera (HRC). Time-resolved zeroth-order images reveal that the pulsar emits x rays at all pulse phases. Analysis of the flux at minimum -- most likely nonthermal in origin -- places an upper limit (T(sub infinity) < 2.1 MK) on the surface temperature of the underlying neutron star. In addition, analysis of the pulse profile appears to confirm the absolute timing of the Observatory to within about 0.2 ms. |
| Databáze: | OpenAIRE |
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